[jboss-user] [JBoss Seam] - Re: New User Lazy Load Question

[christian.bauer@jboss.com]

If you load a User instance into the Session context it becomes _detached_ from the persistence context, by definition (the persistence context has a smaller scope, Conversation or Event). 

So if you want to access unloaded associations or collections on that User instance you need to _reattach_ it or _merge_ it into a new persistence context at the time you want to initialize associations or collections. This means you need to pass the instance into the entityManager.merge(user) method, then take the return value and access your collection there.

I recommend that you instead:

a) do not access the collection of the User instance in the Session but instead put the "currentPhoneNumbers" list into the Session as well and access it directly

b) map the one-to-many with EAGER fetching so the collection is loaded right away when the User is loaded


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